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Although data are limited, studies suggest on average lower positive airway pressure use in Black, indigenous, and people of color (BIPOC) compared with Whites in most but not all studies. Most of these observational studies are certainly limited by confounding by socioeconomic status and other unmeasured factors that likely contribute to differences. The etiology of these observed disparities is likely multifactorial, due in part to financial limitations, differences in sleep opportunity, poor sleep quality due to environmental disruptions, and so forth. These disparities in sleep health are likely related to chronic inequities, including experiences of racism, neighborhood features, structural, and contextual factors. Dedicated studies focusing on understanding adherence in BIPOC are lacking. Further research is needed to understand determinants of PAP use in BIPOC subjects and identify feasible interventions to improve sleep health and reduce sleep apnea treatment disparities.

Study objectivesThe clinical benefits of positive airway pressure (PAP) therapy for obstructive sleep apnea are assumed to require adherent PAP usage, defined by the Centers for Medicare & Medicaid Services as ≥ 4 hours of use ≥ 70% of nights. However, this definition is based on early data and does not necessarily capture improvements at subthreshold adherence. We explored dose-response relationships between PAP adherence measures and excessive daytime sleepiness from the HomePAP randomized controlled trial.MethodsParticipants aged ≥ 18 years with an apnea-hypopnea index ≥ 15 events/h and baseline sleepiness (Epworth Sleepiness Scale [ESS] ≥ 12) received PAP therapy. Data were collected at baseline, 1-month follow-up, and 3-months follow-up. Regression models and receiver operating characteristic curves evaluated PAP measures as predictors of ESS change and normalization (ESS < 10).ResultsIn 119 participants (aged 49.4 ± 12.6 years, 66.4% male, 72.3% White), > 50% were PAP nonadherent per Centers for Medicare & Medicaid Services criteria at 3 months. The percentage of nights with PAP use ≥ 4 hours predicted ESS change (P = .023), but not when controlling for the apnea-hypopnea index. The percentage of nights with ≥ 4 hours and average PAP use provided the best discrimination for predicting ESS normalization; each 10% increase in PAP use ≥ 4 hours increased the odds of ESS normalization by 22% (P = .007); those using PAP ≥ 4 hours had a nearly 3-fold greater odds of ESS normalization (P = .025). PAP use for at least 4 hours and on 70% of nights provided the best balance between specificity (0.50) and sensitivity (0.73).ConclusionsAlthough subadherent PAP usage may still confer some benefit for patients with obstructive sleep apnea, adherence to current criteria confers the highest likelihood for ESS change and normalization.Clinical trial registrationRegistry: ClinicalTrials.gov; Name: Portable Monitoring for Diagnosis and Management of Sleep Apnea (HomePAP); URL: https://clinicaltrials.gov/ct2/show/NCT00642486; Identifier: NCT00642486.CitationPascoe M, Bena J, Andrews ND, etal. Dose-response relationship between positive airway pressure therapy and excessive daytime sleepiness: the HomePAP study. J Clin Sleep Med. 2022;18(4):1027-1034.

Rationale: Ambient air pollution exposure is associated with respiratory morbidity among individuals with chronic obstructive pulmonary disease (COPD), particularly among those with concomitant obesity. Although people with COPD report high incidence of poor sleep quality, no studies have evaluated the association between air pollution exposure, obesity, and sleep disturbances in COPD. Methods: We analyzed data collected from current and former smokers with COPD enrolled in the Subpopulations and Intermediate Outcome Measures in COPD -Air Pollution ancillary study (SPIROMICS AIR). Socio-demographics and anthropometric measurements were collected, and 1-year mean historical ambient particulate matter (PM(2.5)) and ozone concentrations at participants’ residences were estimated by cohort-specific spatiotemporal modeling. Sleep quality was assessed with the Pittsburgh Sleep Quality Index (PSQI), and regression models were constructed to determine the association of 1-year PM(2.5 )(1Yr-PM(2.5)) and 1-year ozone (1Yr-ozone) with the PSQI score, and whether obesity modified the association. Results: In 1308 participants (age: 65.8±7.8 years, 42% women), results of regression analyses suggest that each 10µg/m(3) increase in 1Yr-PM(2.5 )was associated with a 2.1-point increase in PSQI (P=0.03). Obesity modified the association between 1Yr-PM(2.5) and PSQI (P=0.03). In obese and overweight participants, a 10µg/m(3) increase in 1Yr-PM(2.5) was associated with a higher PSQI (4.0 points, P

BackgroundEvaluation and interpretation of the literature on obstructive sleep apnea (OSA) allows for consolidation and determination of the key factors important for clinical management of the adult OSA patient. Toward this goal, an international collaborative of multidisciplinary experts in sleep apnea evaluation and treatment have produced the International Consensus statement on Obstructive Sleep Apnea (ICS:OSA). MethodsUsing previously defined methodology, focal topics in OSA were assigned as literature review (LR), evidence-based review (EBR), or evidence-based review with recommendations (EBR-R) formats. Each topic incorporated the available and relevant evidence which was summarized and graded on study quality. Each topic and section underwent iterative review and the ICS:OSA was created and reviewed by all authors for consensus. ResultsThe ICS:OSA addresses OSA syndrome definitions, pathophysiology, epidemiology, risk factors for disease, screening methods, diagnostic testing types, multiple treatment modalities, and effects of OSA treatment on multiple OSA-associated comorbidities. Specific focus on outcomes with positive airway pressure (PAP) and surgical treatments were evaluated. ConclusionThis review of the literature consolidates the available knowledge and identifies the limitations of the current evidence on OSA. This effort aims to create a resource for OSA evidence-based practice and identify future research needs. Knowledge gaps and research opportunities include improving the metrics of OSA disease, determining the optimal OSA screening paradigms, developing strategies for PAP adherence and longitudinal care, enhancing selection of PAP alternatives and surgery, understanding health risk outcomes, and translating evidence into individualized approaches to therapy.

The high burden of obstructive sleep apnea (OSA), combined with inadequate supply of sleep specialists and constraints on polysomnography resources, has prompted interest in alternative models of care to improve access and treatment effectiveness. In appropriately selected patients, ambulatory clinical pathways and use of nonphysicians or primary care providers to manage OSA can improve timely access and costs without compromising adherence or other clinical outcomes. Although initial studies show promising results, there are several potential barriers that must be considered before broad implementation, and further implementation research and economic evaluation studies are required.

Disparities in sleep health are important but underrecognized contributors to health disparities. Understanding the factors contributing to sleep heath disparities and developing effective interventions are critical to improving all aspects of heath. Sleep heath disparities are impacted by socioeconomic status, racism, discrimination, neighborhood segregation, geography, social patterns, and access to health care as well as by cultural beliefs, necessitating a cultural appropriateness component in any intervention devised for reducing sleep health disparities. Pediatric sleep disparities require innovative and urgent intervention to establish a foundation of lifelong healthy sleep. Tapping the vast potential of technology in improving sleep health access may be an underutilized tool to reduce sleep heath disparities. Identifying, implementing, replicating, and disseminating successful interventions to address sleep disparities have the potential to reduce overall disparities in health and quality of life.

The high burden of obstructive sleep apnea (OSA), combined with inadequate supply of sleep specialists and constraints on polysomnography resources, has prompted interest in alternative models of care to improve access and treatment effectiveness. In appropriately selected patients, ambulatory clinical pathways and use of nonphysicians or primary care providers to manage OSA can improve timely access and costs without compromising adherence or other clinical outcomes. Although initial studies show promising results, there are several potential barriers that must be considered before broad implementation, and further implementation research and economic evaluation studies are required.

STUDY OBJECTIVES: Poor adherence undermines the effectiveness of positive airway pressure (PAP) therapy for sleep apnea. Disparities exist in PAP adherence by race/ethnicity and neighborhood socioeconomic status (SES), but the etiology of these differences is poorly understood. We investigated whether home environmental factors contribute to PAP adherence and whether identified factors explain disparities in adherence by SES. METHODS: Adult patients with sleep apnea were surveyed at clinic visits about their sleep environment. Medical records were abstracted for demographic data, sleep apnea severity, comorbidities, and objective PAP adherence. We evaluated the association between aspects of home sleep environment with PAP adherence using multivariate linear and logistic regression, and assessed effect modification by SES factors. RESULTS: Participants (n = 119) were diverse, with 44% nonwhite and 35% uninsured/Medicaid. After adjusting for age, sex, race/ethnicity, insurance, neighborhood SES, education, and marital status, participants who endorsed changing sleeping location once per month or more (18%, n = 21) had 77% lower odds of meeting PAP adherence criteria (> 4 h/night for 70% of nights) and less PAP use (median −11 d/mo, 95% confidence intervals −15.3, −6.5). Frequency of sleeping location change was the only environmental factor surveyed associated with PAP adherence. CONCLUSIONS: Frequent change in sleeping location is associated with reduced PAP adherence, independent of sociodemographic factors. This novel finding has implications for physician-patient dialogue. PAP portability considerations in device selection and design may modify adherence and potentially improve treatment outcomes. Prospective investigation is needed to confirm this finding and inform design of possible interventions. CITATION: Liou HY, Kapur VK, Consens F, Billings ME. The effect of sleeping environment and sleeping location change on positive airway pressure adherence. J Clin Sleep Med. 2018;14(10):1645–1652.

PURPOSE OF REVIEW: Sleep is important for overall health and well-being. Insufficient sleep and sleep disorders are highly prevalent among adults and children and therefore a public health burden, particularly because poor sleep is associated with adverse health outcomes. Emerging evidence has demonstrated that environmental factors at the household- and neighborhood-level can alter healthy sleep. This paper will (1) review recent literature on the environmental determinants of sleep among adults as well as children and adolescents; and (2) discuss the opportunities and challenges for advancing research on the environment and sleep. RECENT FINDINGS: Epidemiologic research has shown that social features of environments, family, social cohesion, safety, noise, and neighborhood disorder can shape and/or impact sleep patterns; and physical features such as light, noise, traffic, pollution, and walkability can also influence sleep and is related to sleep disorders among adults and children. Prior research has mainly measured one aspect of the environment, relied on self-reported sleep, which does not correlate well with objective measures, and investigated cross-sectional associations. Although most studies are conducted among non-Hispanic white populations, there is growing evidence that indicates that minority populations are particularly vulnerable to the effects of the environment on insufficient sleep and sleep disorders. SUMMARY: There is clear evidence that environmental factors are associated with insufficient sleep and sleep disorders. However, more research is warranted to evaluate how and which environmental factors contribute to sleep health. Interventions that target changes in the environment to promote healthy sleep should be developed, tested, and evaluated as a possible pathway for ameliorating sleep health disparities and subsequently health disparities.

STUDY OBJECTIVES: Obstructive sleep apnea (OSA) is prevalent among older adults. Although treatment with positive airway pressure (PAP) lowers subsequent morbidity, PAP adherence is inconsistent. Socioeconomic disparities have been observed in OSA treatment, but regional differences in OSA care are unknown. This study examined geographic variations in PAP treatment and adherence among older Americans. METHODS: This study utilized a representative 5% sample of all Medicare fee-for-service beneficiaries aged 65+ years. An OSA diagnosis, treatment, and PAP adherence were confirmed with International Classification of Diseases, Ninth Revision, HCPCS (Health Care Common Procedure Coding System) codes, and ≥2 HCPCS claims for PAP supplies respectively. Descriptive statistics were used to examine proportions of Medicare beneficiaries who obtained and adhered to PAP. Maps described the proportion of treated and adherent beneficiaries by state and hospital referral region. RESULTS: For state-level data, PAP treatment and adherence proportions among beneficiaries with an OSA diagnosis ranged between 54–87% and 59–81%, respectively. Proportions of treated patients were higher in Midwest states (>80%), in comparison to Northwest, Northeast, and Southern states (

Background and Purpose— Continuous positive airway pressure (CPAP) for the treatment of obstructive sleep apnea may improve stroke recovery, but adherence is poor. We assessed the effectiveness of an intensive CPAP adherence program during and after inpatient stroke rehabilitation on 3-month adherence and stroke recovery. Methods— In a single-arm study, 90 stroke rehabilitation patients were enrolled into an intensive CPAP adherence program. CPAP was continued after a run-in among qualifying patients with evidence of obstructive sleep apnea. The primary outcome was CPAP adherence, defined as ≥4 hours of use on ≥70% of days, over 3 months. Results— A total of 62 patients qualified for continued CPAP and 52 of these were willing to continue CPAP after discharge from rehabilitation. At 3 months, the average daily CPAP use was 4.7 hours (SD 2.6), and 32/52 (62%) patients were adherent. Factors significantly associated with adherence included more severe stroke, aphasia, and white race. Compared with nonadherent patients, adherent patients experienced greater improvements in the cognitive component of the Functional Independence Measure ( P =0.02) and in the National Institutes of Health Stroke Scale ( P =0.03). Conclusions— This intensive CPAP adherence program initiated during stroke rehabilitation can lead to CPAP adherence in the majority of patients with evidence of obstructive sleep apnea, including those with more severe stroke and aphasia, and may promote recovery. Clinical Trial Registration— URL: https://www.clinicaltrials.gov . Unique identifier: NCT02809430.

Sleep health is a multidimensional construct that includes adequate duration, quality, and appropriately timed sleep that may be influenced by environmental factors. In this review, we focus on how an individual's living and sleeping environment, both the surrounding neighborhood physical and social features and the atmosphere around them, may impact their sleep health. We explore the associations of the physical environment (urban density, recreational facilities, green space, mixed land use, and healthy food stores), neighborhood deprivation (disadvantage and disorder), and the social environment (social cohesion, safety, and stigma) with sleep in both adult and pediatric populations. We investigate how physical and social environmental features may lead to alterations in the timing, duration, and quality of sleep and contribute to the most prevalent sleep disorders: insomnia, sleep apnea, and circadian rhythm disorders. We also review how ambient factors such as artificial light, environmental noise, and air pollution may contribute to sleep pathology. We have included key studies and recent emerging data regarding how the differential distribution of environmental factors that may affect sleep health may contribute to sleep health disparities.

Rationale: Air pollution may influence sleep through airway inflammation or autonomic nervous system pathway alterations. Epidemiological studies may provide evidence of relationships between chronic air pollution exposure and sleep apnea. Objectives: To determine whether ambient-derived pollution exposure is associated with obstructive sleep apnea and objective sleep disruption. Methods: We analyzed data from a sample of participants in MESA (Multi-Ethnic Study of Atherosclerosis) who participated in both the Sleep and Air studies. Mean annual and 5-year exposure levels to nitrogen dioxide (NO(2)) and particulate matter ≤ 2.5 μm in aerodynamic diameter (PM(2.5)) were estimated at participants’ homes using spatiotemporal models based on cohort-specific monitoring. Participants completed in-home full polysomnography and 7 days of wrist actigraphy. We used multivariate models, adjusted for demographics, comorbidities, socioeconomic factors, and site, to assess whether air pollution was associated with sleep apnea (apnea–hypopnea index ≥ 15) and actigraphy-measured sleep efficiency. Results: The participants (n = 1,974) were an average age of 68 (±9) years, 46% male, 36% white, 24% Hispanic, 28% black, and 12% Asian; 48% had sleep apnea and 25% had a sleep efficiency of ≤88%. A 10 ppb annual increase in NO(2) exposure was associated with 39% greater adjusted odds of sleep apnea (95% confidence interval [CI], 1.03–1.87). A 5 μg/m(3) greater annual PM(2.5) exposure was also associated with 60% greater odds of sleep apnea (95% CI, 0.98–2.62). Sleep efficiency was not associated with air pollution levels in fully adjusted models. Conclusions: Individuals with higher annual NO(2) and PM(2.5) exposure levels had a greater odds of sleep apnea. These data suggest that in addition to individual risk factors, environmental factors also contribute to the variation of sleep disorders across groups, possibly contributing to health disparities.

Background: Continuous positive airway pressure (CPAP) for the treatment of obstructive sleep apnea (OSA) may improve stroke recovery but prior studies have been limited by poor adherence. In a single-arm study of stroke rehabilitation patients treated with CPAP, we evaluated environmental, behavioral and social factors associated with CPAP adherence. Methods: As part of an intensive CPAP adherence protocol, stroke rehabilitation patients were assessed for OSA based on CPAP device download. Qualifying patients underwent motivational interviewing (MI) sessions to set goals and address barriers for CPAP use. Patients who planned to continue CPAP after rehabilitation unit discharge were asked after 3-months to detail facilitators or barriers to continued CPAP use. We conducted a thematic analysis of the MI and 3-month interview notes, with four authors each coding modifiable and less modifiable barriers and facilitators. Results: Among 52 subjects who planned to continue CPAP over 3-months, 32 (62%) were adherent, defined as ≥ 4 hours on ≥ 70% of days. Adherent patients were less likely to complain of claustrophobia than non-adherent patients (13% vs. 42%, p =0.02). Facilitators for adherence were improved sleep quality and daytime function, self-efficacy with CPAP, social support, and positive expectations of treatment benefit. Common modifiable barriers included discomfort using a new health technology, common CPAP side effects and anxiety. Several patients described more complex and less modifiable barriers such as social stressors, sleep disturbance, lack of social support and competing health issues. Conclusions: An intensive CPAP adherence protocol with MI sessions during rehabilitation yielded a high rate of adherence even outside of the supportive inpatient environment. Adherence programs for CPAP after stroke should focus on interventions to address modifiable barriers, including early desensitization to improve anxiety or claustrophobia and continued education or training to address perceived self-efficacy and importance of CPAP therapy. Future studies should assess the effectiveness of MI to identify factors associated with CPAP adherence and to design interventions to improve long-term adherence by modifying these factors.

Emerging evidence demonstrates that neighborhood characteristics are associated with sleep health. This chapter will (1) introduce the theoretical rationale for why contextual and/or environmental factors may affect sleep health, (2) review recent literature on the neighborhood determinants of sleep among children and adolescents, followed by (3) a similar review of the adult literature, and (4) conclude with the opportunities and challenges for advancing research and interventions on neighborhoods and sleep. Epidemiologic research has shown that both social and physical features of neighborhoods, including social cohesion, safety, neighborhood disorder, light, noise, traffic, pollution, and walkability, are related to sleep health among children and adults. More research is necessary to evaluate which contextual and/or environmental factors are most important for sleep health as well as to elucidate the underlying mechanisms that drive such relationships. Neighborhood-level interventions to promote healthy sleep should be developed, tested, and evaluated as possible pathways for ameliorating sleep health disparities and consequent health disparities.

Background There has been growing interest in understanding how neighborhoods may be related to cardiovascular risk. Neighborhood effects on sleep apnea could be one contributing mechanism. We investigated whether neighborhood walking environment and personal activity levels are related to OSA. Methods Data were analyzed from a subpopulation of the Multi-Ethnic Study of Atherosclerosis (MESA), including subjects who participated in both the MESA Sleep and Neighborhood studies (N = 1,896). Perceived neighborhood walking environment and subjects' objective activity were evaluated in multivariate, multilevel models to determine any association with sleep apnea severity as defined by using the apnea-hypopnea index. Sex, race/ethnicity, and obesity were examined as moderators. Results Residing in the lowest quartile walking environment neighborhoods (score P Conclusions Living in neighborhoods with a low walking environment score is associated with greater severity of sleep apnea, especially in male and obese individuals. In men, greater activity level is associated with less severe sleep apnea, independent of BMI, comorbidities, and socioeconomic status. Neighborhood-level interventions that increase walkability and enable increased physical activity may potentially reduce the severity of sleep apnea.

Suboptimal CPAP use, less than 4 h per night, may still have beneficial effects on daytime sleepiness. Removing CPAP in those who routinely use it for 2–3 h a night worsened their daytime sleepiness.http://bit.ly/36FjnF6

Introduction: Obstructive sleep apnea (OSA) is associated with worse outcome after stroke. Treatment with continuous positive airway pressure (CPAP) may improve recovery after stroke but has been limited by poor adherence. Methods: In a single-arm ongoing study, adults with stroke underwent an intensive CPAP adherence protocol during inpatient rehabilitation, including motivational interviewing and help with CPAP by nurses and respiratory therapists. A 3-night run-in period of auto-titrating CPAP was used to test for tolerance and to diagnose OSA, based upon the apnea-hypopnea index and flow resistance. Qualifying patients were asked to continue CPAP for 3 months. The outcomes included CPAP adherence, defined as ≥ 4 hours of use on ≥ 70% of nights, and stroke recovery, measured by change in NIH Stroke scale (NIHSS) and Functional Independence Measure (FIM) over 3 months. Results: During the run-in, 39 of 60 (65%) patients had presumed OSA, 5 (8%) had no evidence of OSA, 4 (7%) had evidence of central sleep apnea, and 12 (20%) were intolerant of CPAP. Among the 34 of 39 patients who chose to continue CPAP after the run-in, the median use per night was 5.3 hours (IQR 4.1, 6.0) with 56% (n=19) adherent during rehabilitation. The median CPAP use per night for the 22 who completed the study was 5.1 hours (IQR 2.5, 6.4) with 54% (n=12) adherent over the 3-month period. Unadjusted for baseline factors, there was a significant change in the NIHSS in adherent patients (n=10) vs. non-adherent patients (n=10) [5 (SD 3) vs. 2 (SD 2), p =0.02]. Comparing adherent (n=7) to non-adherent patients (n=5), the change for total FIM trended towards significant [42 (SD 18) vs. 30 (SD 11), p =0.20] and the change for cognitive component of the FIM was significant [10 (SD 7) vs. 2 (SD 3), p =0.05]. Conclusion: After an intensive adherence intervention, over half of stroke patients with presumed OSA and CPAP tolerance were adherent over 3 months. CPAP adherent patients had greater improvement in NIHSS and the cognitive component of the FIM, although the associations may be confounded by patients’ characteristics influencing both adherence and outcomes. Future studies are needed to evaluate in a randomized trial if the intensive intervention will lead to long-term CPAP adherence and improved stroke recovery.

Study objectives Measures of health-related quality of life (HRQL) specific for sleep disorders have had limited psychometric evaluation in the context of randomized controlled trials (RCTs). We investigated the psychometric properties of the Functional Outcomes of Sleep Questionnaire (FOSQ) and Sleep Apnea Quality of Life Instrument (SAQLI). We evaluated the FOSQ and SAQLI construct and criterion validity, determined a minimally important difference, and assessed for associations of responsiveness to baseline subject characteristics and continuous positive airway pressure (CPAP) adherence in a RCT population. Design Secondary analysis of data collected in a multisite RCT of home versus laboratory-based diagnosis and treatment of obstructive sleep apnea (HomePAP trial). Participants Individuals enrolled in the HomePAP trial (n = 335). Interventions N/A. Measurement and results The FOSQ and SAQLI subscores demonstrated high reliability and criterion validity, correlating with Medical Outcomes Study 36-Item Short Form Survey domains. Correlations were weaker with the Epworth Sleepiness Scale (ESS). Both the FOSQ and SAQLI scores improved after 3 mo with CPAP therapy. Averaging 4 h or more of CPAP use was associated with an increase in the FOSQ beyond the minimally important difference. Baseline depressive symptoms and sleepiness predicted FOSQ and SAQLI responsiveness; demographic, objective obstructive sleep apnea (OSA) severity and sleep habits were not predictive in linear regression. Conclusions The FOSQ and SAQLI are responsive to CPAP intervention, with the FOSQ being more sensitive to differences in CPAP adherence than the SAQLI. These instruments provide unique information about health outcomes beyond that provided by changes in physiological measures of OSA severity (apnea-hypopnea index). Clinical trial information Portable Monitoring for Diagnosis and Management of Sleep Apnea (HomePAP) URL: http://clinicaltrials.gov/show/NCT00642486. NIH clinical trials registry number: NCT00642486.

Study objectives To investigate cross-sectional associations of neighborhood social environment (social cohesion, safety) with objective measures of sleep duration, timing, and disturbances. Methods A racially/ethnically diverse population of men and women (N = 1949) aged 54 to 93 years participating in the Multi-Ethnic Study of Atherosclerosis Sleep and Neighborhood Ancillary studies. Participants underwent 1-week actigraphy between 2010 and 2013. Measures of sleep duration, timing, and disruption were averaged over all days. Neighborhood characteristics were assessed via questionnaires administered to participants and an independent sample within the same neighborhood and aggregated at the neighborhood (census tract, N = 783) level using empirical Bayes estimation. Multilevel linear regression models were used to assess the association between the neighborhood social environment and each sleep outcome. Results Neighborhood social environment characterized by higher levels of social cohesion and safety were associated with longer sleep duration and earlier sleep midpoint. Each 1 standard deviation higher neighborhood social environment score was associated with 6.1 minutes longer [95% confidence interval (CI): 2.0, 10.2] sleep duration and 6.4 minutes earlier (CI: 2.2, 10.6) sleep midpoint after adjustment for age, sex, race, socioeconomic status, and marital status. These associations persisted after adjustment for other risk factors. Neighborhood social factors were not associated with sleep efficiency or sleep fragmentation index. Conclusions A more favorable neighborhood social environment is associated with longer objectively measured sleep duration and earlier sleep timing. Intervening on the neighborhood environment may improve sleep and subsequent health outcomes.

Sleep medicine remains an underrepresented medical specialty worldwide, with significant geographic disparities with regard to training, number of available sleep specialists, sleep laboratory or clinic infrastructures, and evidence-based clinical practices. The American Academy of Sleep Medicine (AASM) is committed to facilitating the education of sleep medicine professionals to ensure high-quality, evidence-based clinical care and improve access to sleep centers around the world, particularly in developing countries. In 2002, the AASM launched an annual 4-week training program called Mini-Fellowship for International Scholars, designed to support the establishment of sleep medicine in developing countries. The participating fellows were generally chosen from areas that lacked a clinical infrastructure in this specialty and provided with training in AASM Accredited sleep centers. This manuscript presents an overview of the program, summarizes the outcomes, successes, and lessons learned during the first 12 years, and describes a set of programmatic changes for the near-future, as assembled and proposed by the AASM Education Committee and recently approved by the AASM Board of Directors.Ioachimescu OC; Wickwire EM; Harrington J; Kristo D; Arnedt JT; Ramar K; Won C; Billings ME; DelRosso L; Williams S; Paruthi S; Morgenthaler TI. A dozen years of American Academy of Sleep Medicine (AASM) international mini-fellowship: program evaluation and future directions.

Introduction Residents learn and participate in care within hospital cultures that may tolerate unprofessional conduct and cynical attitudes, labeled the “hidden curriculum.” We hypothesized that this hidden curriculum may have deleterious effects on residents' professional development and investigated whether witnessing unprofessional behavior during residency was associated with burnout and cynicism. Methods We surveyed internal medicine residents at 2 academic centers for 3 years (2008–2010). Hidden curriculum items assessed exposure to unprofessional conduct. We used regression analyses to examine if hidden curriculum scores were associated with cynicism and the Maslach Burnout Inventory depersonalization and emotional exhaustion domain scores. Results The response rate was 48% (337 of 708). In the 284 surveys analyzed, 45% of respondents met burnout criteria and had significantly higher hidden curriculum scores (26 versus 19, P < .001) than those not meeting criteria. In cross-sectional analyses, the hidden curriculum score was significantly associated with residents' depersonalization, emotional exhaustion, and cynicism scores. Cynicism scores were also associated with burnout. Conclusions Exposure to unprofessional conduct was associated with higher burnout and cynicism scores among internal medicine residents. We also found that cynicism and burnout were significantly associated and may be measures of similar but not necessarily identical responses to the challenges posed by residency. Measuring the hidden curriculum and cynicism may provide direction for educators attempting to reform hospital culture and improve resident well-being.

Purpose Internal medicine residents frequently provide end-of-life care, yet feel inadequately trained and uncomfortable providing this care, despite efforts to improve end-of-life care curricula. Understanding how residents' experiences and attitudes affect their perceived competence in providing end-of-life care is important for targeting educational interventions. Method Medicine residents (74) at the University of Washington and Medical University of South Carolina enrolled in a trial investigating the efficacy of a communication skills intervention to improve end-of-life care. On entry to the study in the fall of 2007, residents completed a questionnaire assessing their prior experiences, attitudes, and perceived competence with end-of-life care. Multivariate regression analysis was performed to assess whether attitudes and experiences with end-of-life care were associated with perceived competence, controlling for gender, race/ethnicity, training year, training site, and personal experience with death of a loved one. Results Residents had substantial experience providing end-of-life care. In an adjusted multivariate model including attitudes and clinical experience in end-of-life care as predictors, only clinical experience providing end-of-life care was associated with self-perceived competence (P=.015). Conclusions Residents with more clinical experience during training had greater self-perceived competence providing end-of-life care. Increasing the quantity and quality of the end-of-life care experiences during residency with appropriate supervision and role modeling may lead to enhanced skill development and improve the quality of end-of-life care. The results suggest that cultivating bedside learning opportunities during residency is an appropriate focus for educational interventions in end-of-life care education.

Circadian rhythms underlie nearly all physiologic functions and organ systems. Circadian abnormalities have attendant implications for critical illness survival. The intensive care unit (ICU) environment, with its lack of diurnal variation in sound, light, and social cues, may precipitate circadian dysrhythmias. Additional features of critical care, including mechanical ventilation and sedation, likely perpetuate circadian misalignment. Critical illness itself, from sepsis to severe brain injury, can compromise circadian health. Use of daylight, time-restricted feedings, and administration of melatonin can possibly restore circadian rhythm. However, further study is necessary to assess the effectiveness of these interventions and their impact on ICU outcomes.

Davis et al.1 highlight the importance of timely identification of sleep-disordered breathing in patients who have had an acute stroke. In the immediate aftermath of a stroke, patients are frequently obtunded and so it is not unusual for symptoms of sleep-disordered breathing such as snoring, gasping, and choking sensation while asleep and excessive daytime sleepiness to be erroneously attributed to the stroke itself. While obstructive sleep apnea is the most common, central and mixed sleep apnea should be kept in mind especially in patients who have a bulbar stroke. Another unresolved issue is the appropriate time after a stroke when sleep apnea should be diagnosed and treated; the grade of sleep-disordered breathing may spontaneously improve and continuous positive airway pressure (CPAP) requirements decrease as the stroke becomes subacute and finally chronic. Repeating the sleep study and, if warranted, retitrating the CPAP a few months after the stroke is prudent. N. Sethi serves as Associate Editor for The Eastern Journal of Medicine … Correspondence to: marialuisa.sacchetti{at}uniroma1.it Correspondence to: apd77{at}uw.edu

CPAP is an effective treatment for OSA that may reduce health care utilization and costs. Medicare currently reimburses the costs of long-term CPAP therapy only if the patient is adherent during a 90-day trial. If not, Medicare requires a repeat polysomnogram (PSG) and another trial which seems empirically not cost-effective. We modeled the cost-effectiveness of current Medicare policy compared to an alternative policy (clinic-only) without the adherence criterion and repeat PSG.Cost-utility and cost-effectiveness analysis.U.S. Medicare Population.N/A.N/A.We created a decision tree modeling (1) clinic only follow-up vs. (2) current Medicare policy. Costs were assigned based on Medicare reimbursement rates in 2012. Sensitivity analyses were conducted to test our assumptions. We estimated cumulative costs, overall adherence, and QALY gained for a 5-year time horizon from the perspective of Medicare as the payer. Current Medicare policy is more costly than the clinic-only policy but has higher net adherence and improved utility. Current Medicare policy compared to clinic-only policy costs $30,544 more per QALY.Current CMS policy promotes early identification of those more likely to adhere to CPAP therapy by requiring strict adherence standards. The policy effect is to deny coverage to those unlikely to use CPAP long-term and prevent wasted resources. Future studies are needed to measure long-term adherence in an elderly population with and without current adherence requirements to verify the cost-effectiveness of a policy change.

Summary Sleep-disordered breathing is an increasingly recognized disorder that is particularly prevalent among stroke patients. Obstructive sleep apnea, a form of sleep-disordered breathing, is associated with multiple major stroke risk factors but is also an independent risk factor for stroke. In addition, untreated sleep apnea is associated with poor functional outcome after stroke. Sleep apnea is amenable to treatment and should be considered a modifiable stroke risk factor, though long-term compliance remains a major barrier. A better understanding of the relationship between sleep apnea and stroke may prompt providers to pursue the early diagnosis and treatment of underlying sleep-disordered breathing to both improve the chance of recovery from stroke in the short term and to reduce the risk of recurrent stroke in the long term.

Study objectives Black race has been associated with decreased continuous positive airway pressure (CPAP) adherence. Short sleep duration, long sleep latency, and insomnia complaints may affect CPAP adherence as they affect sleep and opportunity to use CPAP. We assessed whether self-reported sleep measures were associated with CPAP adherence and if racial variations in these sleep characteristics may explain racial differences in CPAP adherence. Design Analysis of data from a randomized controlled trial (HomePAP), which investigated home versus laboratory-based diagnosis and treatment of obstructive sleep apnea. Setting Seven American Academy of Sleep Medicine-accredited sleep centers in five cities in the United States. Patients or participants Enrolled subjects (n = 191) with apnea-hypopnea index ≥ 15 and sleepiness (Epworth Sleepiness Scale > 12). Interventions N/A. Measurements and results Multivariable regression was used to assess if subjective sleep measures and symptoms predicted 3-mo CPAP use. Mediation analysis was used to assess if sleep measures mediated the association of race with CPAP adherence. Black participants reported shorter sleep duration and longer sleep latency at baseline than white and Hispanic participants. Shorter sleep duration and longer sleep latency predicted worse CPAP adherence. Sleep duration mediated the association of black race with lower CPAP adherence. However, insomnia symptoms were not associated with race or CPAP adherence. Conclusions Among subjects with similar severity of obstructive sleep apnea and sleepiness, baseline self-reported sleep duration and latency, but not perceived insomnia, predicted CPAP adherence over 3 mo. Sleep duration explains some of the observed differences in CPAP use by race. Sleep duration and latency should be considered when evaluating poor CPAP adherence. Clinical trial information PORTABLE MONITORING FOR DIAGNOSIS AND MANAGEMENT OF SLEEP APNEA (HOMEPAP) URL: http://clinicaltrials.gov/show/NCT00642486. NIH clinical trials registry number: NCT00642486.

Study objectives There are few established predictors of CPAP adherence; poor adherence limits its effectiveness. We investigated whether race, education level, and residential economic status predict CPAP adherence in participants enrolled in a trial with standard access to treatment. Design A multi-center randomized trial of home vs. lab-based evaluation and treatment of OSA assessing adherence to CPAP at 1 and 3 months. Setting Seven AASM-accredited sleep centers in 5 U.S. cities. Participants Subjects with moderate to severe OSA (AHI ≥ 15 and Epworth Sleepiness Scale score > 12) who completed follow-up at 1 and/or 3 months (n = 135). Measurements and results Subjects' demographic data were collected upon enrollment; CPAP use at 1 and 3 months was assessed at clinic follow-up. In unadjusted analyses, CPAP adherence (average minutes per night of CPAP use) at 3 months was lower in black subjects and in subjects from lower socioeconomic status ZIP codes. In adjusted analyses using multivariate linear regression, black race was predictive of CPAP adherence at one month (P = 0.03). At 3 months, black race was predictive in analyses only when ZIP code SES was not adjusted for. Conclusion Black race and lower socioeconomic residential areas are associated with poorer adherence to CPAP in subjects with standardized access to care and treatment. Disparities remain despite provision of standardized care in a clinical trial setting. Future research is needed to identify barriers to adherence and to develop interventions tailored to improve CPAP adherence in at risk populations. Portable Monitoring for Diagnosis and Management of Sleep Apnea (HomePAP) CLINICAL TRIAL INFORMATION: NIH CLINICAL TRIALS REGISTRY NUMBER: NCT00642486. URL: http://clinicaltrials.gov/show/NCT00642486.

Medical students' learning about end-of-life care can be categorized into three learning modalities: formal curriculum, taught in lectures; informal curriculum, conveyed through clinical experiences; and "hidden curriculum," inferred from behaviors and implicit in medical culture. In this study, we evaluated associations between survey items assessing these learning modalities and students' perceptions of their preparation, quality of education, and attitudes toward end-of-life care.Data were collected from a national survey of fourth-year medical students (n = 1455) at 62 medical schools in 2001. Linear regression analyses were performed to assess associations between formal, informal and hidden end-of-life care curricula and students' perceived preparedness to provide end-of-life care, quality of end-of-life care education and attitudes toward end-of-life, controlling for students' demographics and clustered by school.Students reporting more exposure to formal and informal curricula felt more prepared and rated their end-of-life care education higher. Students with more exposure to a hidden curriculum that devalued end-of-life care perceived their preparation as poorer and had poorer attitudes toward end-of-life care. Minority students had slightly more negative attitudes but no differences in perceived end-of-life care preparation.Medical students' sense of preparedness for end-of-life care and perceptions of educational quality are greater with more coursework and bedside teaching. By contrast, the hidden curriculum conveying negative messages may impair learning. Our findings suggest that implicit messages as well as intentional teaching have a significant impact on students' professional development. This has implications for designing interventions to train physicians to provide outstanding end-of-life care.

Independent predictors of outcome for ischemic stroke include age and initial stroke severity. Intracranial large-vessel occlusion would be expected to predict poor outcome. Because large-vessel occlusion and stroke severity are likely correlated, it is unclear if largevessel occlusion independently predicts outcome or is simply a marker for stroke severity. A consecutive series of patients with suspected stroke or transient ischemic attack were imaged acutely with computed tomography angiography (CTA). CTAs were reviewed for intracranial large-vessel occlusion as the cause of the stroke. Baseline National Institutes of Health Stroke Scale (NIHSS) score, discharge modified Rankin score, and patient demographics were abstracted from hospital records. Poor neurological outcome was defined as modified Rankin score exceeding 2. Seventy-two consecutive patients with acute ischemic stroke were imaged with CTA. The median (range) time from stroke symptom onset to CT imaging was 183 minutes (25 minutes to 4 days). Median NIHSS score was 6 (1–32) and intracranial large-vessel occlusion was found in 28 (38.9%) patients. Fifty-six percent of patients had a good neurological outcome. In multivariate logistic regression analysis, two variables predicted poor neurological outcome: baseline NIHSS score (OR 1.21,95% CI[1.07–1.37]) and presence of intracranial large-vessel occlusion (OR 4.48, 95% CI[1.19–16.9]). The predictive value of large-vessel occlusion, on outcome was similar to an 8-point increase in NIHSS score. In patients presenting with acute brain ischemia, intracranial large-vessel occlusion independently predicts poor neurological outcome at hospital discharge, as does the presence of a high NIHSS score. Performing routine intracranial vascular imaging on acute stroke patients may allow for more accurate determination of prognosis and may also guide therapy.

Background Residents in neurology may feel unprepared to care for dying patients. We developed Death Rounds to provide emotional support and end-of-life care teaching for residents caring for dying patients on the inpatient neurology service. Death Rounds are monthly 1-hour clinical case discussions where residents identify issues through shared experiences. Objective To survey neurology residents' perceptions of Death Rounds with respect to end-of-life care teaching and emotional support. Design, Setting, and Participants We conducted an electronic survey of all (n = 26) neurology residents and recent residency graduates at the University of Washington 2 years after instituting monthly Death Rounds. Main Outcome Measure The survey consisted of 10 questions examining residents' perceptions of the extent to which Death Rounds provided emotional support and end-of-life care teaching. We dichotomized responses to statements about Death Rounds as agree or disagree. Results All 26 residents responded to the survey and attended at least 1 Death Rounds session. More than half of residents attended more than 3 sessions. Residents agreed that Death Rounds helped them cope with dying patients (17 residents [65%]), delivered closure for the team (16 residents [61%]), and provided emotional support, more for the team (18 residents [69%]) than the individual (10 residents [38%]). Most residents felt that Death Rounds provided useful teaching about end-of-life care (18 residents [69%]), and they were satisfied overall with Death Rounds (16 residents [61%]). Conclusions Death Rounds afford an opportunity for physicians-in-training to process as a group their feelings, intense emotions, and insecurities while learning from the dying process. In our inpatient neurology service, most residents found it a rewarding and valuable experience.